—What’re the rules in class? —First, mobile phones can’t be ______.
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A
to use
B
using
C
used
D
use
推荐题目
Would you please _________ them _________ a writing competition?
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A
inviting ; join
B
to invite; to join
C
invite; to join
D
to invite; join
Food safety is important. Rules _____ to stop people from food pollution.
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A
must make
B
must be made
C
can make
D
can be made
---Jane, I can’t find Lucy in the classroom. ---Oh, she ________ the piano in the music room.
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A
has played
B
was playing
C
will play
D
is playing